Normally stationary inertia-actuated weft detector



March 27, 1928. 1,664,008 I W. H. WAKEFIELD NORMALLY STATIONARY INERTIAACTUATED WEFT DETECTOR Filed July 1926 I N vEN -o R \A/ALTERJH.WAKEFIELDPatented Mar. 27,1928- WALTER HJWAKEFIELD, OF -WORCESTER,MkSSAGI-IUSETTS, JASSIGNORCJTOGROMPTON & KNOWLES LOOM WORKS,OFWORCESTERflMSSACHUSEi-TS, s A COR PORATIONJOF MASSACHUSETTS.

NORMALLY STATIONARY;INERTIA;'ACZEHATED .DE'RECTQR.

App i at 11e ;-Iuly 19, 926- ser emamu tector being free to .move towarddetecting 15 position by reason of the energy stored therein. In thatapplication the detector is operative because of the kinetic energystored in'the moving part and it is theprincipal object of my presentinvention to apply this sam g neral pri e p -;a (d

tector having a stationary part where the potential energy of arbody-atrestandthe resistance which said body oflers to being set in motion isrelied uponto provide the force which actuatesthe detector.

iVhen weft detectors (are placed on the magazine side of-multi-colorweft replenishing mechanisms it is necessaryto withdraw the detector onthe transferringbeat ofthe loom in order-to make (clear the path of theincoming bobbin. With a detector depending tor its detecting .force-uponav weighted niemben normally at rest the. latter wouldvotferresistance-on the withdrawing stroke which would tend to ,giye theda'tector anindicating movement and it is a. further object vof myinvention to-prO-Vlde for withdrawing-the detector in such a may 7 aswill prevent 1 the weighted mass from :ext g its n rmal. indicatingforee th -id tector. v

Wit these va othe e ieet i iview which .will appear @as the edescription prpcejeds, 7 my invention resides in the; combination a g mn .o {pa t he einafte described and set forth in the claims.

1 h accomp ny ng-dnewing w er n I have shown aconvenientembodiment ofrny invention, a I

Fig. ,1;i;s a-topplan ,viewof my detector showing the same in normalposition -,with the lay' approaching :front center, 1

Fig.- 2 is a fragmentary view;of;a;portion ig h dete e in. i dica ingposition, r ,56

' ig- 3 .i a ve tic l long udina sect on 011 line"3 3.of, Fig. Q1, and a,Fig. ,4 is a transverse verticalrsection pn line'i l e l l.

Referring L th -d awi gs it wil i sse thatflI have provided ,a flay 10having ;a hut e I1 .Whieh l t cei'v s e shutt e :S i mg a hbi B- .A d ts an .12 i secured to any part of th e loom as the lootn side (notshown) and has ;a vhorn 1-3 pro 66 vided @with a vertical slot 14 Whi Ch"IeQ$1V6 S h v, i te end o 4 ac uato l ve 15 ,p shed a th iint rzi e l.a e Po tions thene to a vertically reciprocating block 16. flhe n rsen-d of th actuat i c nected 7 to. a ied v eper t ve yre nn ete q os efplemshi gg imeehehism vand t itee iv -when dep ssed o (in tiat teplenshment- 5A detec o i a eunte't inre g 8qhaving a tap r19 ese u ze t ret.th e e ng l eur dri -e y igp ete ma ner to h s a vd t'lh Jc t ete gropeis f rmed we slide?! p tete ehlyitu a v te d, hasmg :en tep ta dmg slip,21 throug whic extend th red ee een of es :2 Th ea end aid t d h s a-.en ag h aded Eh a nzpe hg thr ugh th ea port on of {the cap 19 ,and ,acompression p i g .2 s r ound th st an :l tween the forward wall. of thecap ;-and the 0 11 21, th efl tQ id sp ing eing t held he-slide-l20-yieinglyininew Qsitionh -s d he eeu- .e =t tet -ifite =Wed sheee yar pe etat ng de eete 12 whi h eeepe te with i asid m ing rnetehed oe est ed eeetere2 gp v ted a a i27 i th ease-20- (Eh imatt t kte des ribe i f iemme teen t ee ien and. m y {b sse tert rin :Baten I -1,97 2.2-

zln c r y ng eu my inven on f- EPIT E Q th i tan A2 wi h a i ea wardlyte /ending rm 3. i yi igiahk pstend ng pmjeetien 31 hreeg ir ehrextendiast psc 32. iTh

deteet 'i2 ha ermej h ntegnally therewith llatetelly--=extent hgmm :3term nat ng-i a e e1gh ed1i as x 4which :is positioned for engagemen w tth stepserew 32.

[Dhe detecte :2 i tpm-vided with ,a, finger Wh 1 QPltates with 1 the;-r.ear 1 right han t-e :3610 t tcen ro le ilever 37 pivoted 1 as at 38to some parti-ofithe bracket or. stand 12. A stop screw 39 mounted inthe stand 12 engages tl16;lGV6l 37 to limit, left hand angular movementthereof; Said lever 37 is provided with a controller end 40 whichnormally lies tothe; front of the vertical plane in which. theactuatorlever: moves;

- The slide has secured thereto a projection 41 through which extends anadjusting positioning screw 42 to cooperate with the end 36 of thecontroller lever.

The usual depending arms 43 of the transferrer arm are indicated in Fig.1 and i V cooperate witha detector withdrawingde-' 'vice comprisingarearwardly extending rod 44"slidable' in thet'ub'ular 'memberand havinga lug 45 integral therewith to' extend in frontof one of said-arms. Saidrod is guided inthe tubular slide 20'as' indicated in Fig. 3 and a lightcompression spring 46 isinterposed between a portion of the slide andthe lug'45 and tends normally to hold the rod 44 inrear position. Thearm 33 of the'detector 36 is reduced or notched as at 47in Fig.4 toforma passagefoi' the rod detector 26"'is properly positioned with the 44, lthe rear end of the latter being up?- turnedasatI' lSKsee Figs. 3 and4), so as to extend behinda portion of the arm 33. l "Under: normalconditions with sufficient yarn present on the bobbin B the partswill bein'the' position indicated in Fig. 1, spring 24 in'oving'theslidejrearwardly so that the weight 34in engagement with the screw 32,

the resetting screw"42"having swung the controller 37 to the positionindicated'in, Fig. '1 with the end 40 thereof"out of the path of the"actuatorif Asflthe latter moves. forward the detector 25 and thetoothedor notched-part of detector 26 will be embeddedinthe yarnof the bobbinso that lat-' eral movement" thereof will be prevented as the slide 20'moves forward under influence I of the lay 'and the finger-25will clearthe i end 36 of the controller lever.

When insufficient yarn for ,continued weaving is present the wedgeddetector 35 will engage the bare bobbin'before th'eteeth of thedetector'26 have an opportunity ito touch the yarn; "Inasmuch -asthere-"is no yarn Y to resist angular movement of the detector 26thelatterwill'be free to move on its pivot- 27 as the'slid'e 20 movesforwardly and this action will ensuebecauseof the fact that the weight34, due to the inertia v sition indicated in Fig. 2.

thereof, will' tend to' remain unmoved ,and as the pivot 27 movesforwardly the detector 26 will be swung laterally to the po- In thislatter position thetinger35 will engage and rock the controller lever"so that the end 40 thereof will extend underth'e actuator lever 15. Asthe latter descends its free movement will be interrupted and rod'17Will -be depressed to initiate replenishmentas set forth in-Patent No.1,030,748. 1

Inasmuch as there is no spring associated with the controller lever 37the latter will remain in the position indicated in Fig. 2 until theresetting screw 42 engages the arm 36 uponthe backward stroke of the layto restore the-controller to the normal position On the subsequenttransferring pick the arms 43 will be moved forwardly from the positionindicated in Fig. 1 to slide the rod 44 forwardly-against the action ofspring 46. This motion will result in engagement by upturned end 48 witharm 43, this engagement takingplace between the weight indicated in Fig.1.

34and th'e'pivot about which the latter is movable so that as "thedetectoris withdrawn the pivoted detector will be held against angularmotion and a repetition of transferring beats of the loom by a mechanismwhich prevents the normal action of weight 34; g

Having thus described myinvention itwill be apparent that changes andmodifications may be made therein by thoseskilled in theafrt witlioutdeparting from the spirit and scopeofthe invention, and I do not wish tobe limited to the details herein disclosed but what I claim is: I

1. In a weft detector for a loom having a lay'niovable toward thedetector and a surface to be detected, a movable support,

a swinging detector, a pivoted'connection lflO between the detector andthe support, said detectoi having'a portion to engage the,

surface lying on one side of the pivoted connectioma weighted membermovable in lit) a horizontal plane and operative aly connected I v tothe swinging'detectorfandhaving the] l center ofgravity thereof locatedon that side of the pivoted connection opposite'a portion of thesnrface'tobe detectedpsaid weighted member being normally at rest andacting by reason of the latent energy stored therein to turn theswinging detector on the pivotal connection as the surface to bedetected engages the aforesaid portion duringthe forward movement of theay- I 7 2. In aweft {detector fora loom having 4 a lay movable towardthedetector and a surfaceto be detected, a movablesupport, a swingingdetector, a ipivoted connection between-the dete'ctorand the support,said detector havingaportion to engage the surface"v lying on one sideof ithe pivoted-connection, a weighted member formed integrally withtheswinging detector and movable with the latter in a horizontal plane,said weighted member having the center of gravity thereof on that sideof the pivotal connection opposite the aforesaid portion of the swingingdetector, said weighted member being normally at rest and tending, bythe latent energy stored therewith, to swing said detector in ahorizontal plane around the pivotal connection'when the surface to bedetected engages the aforesaid portion of the swinging detector duringthe forward movement of the lay.

3. In a weft detector for a loom having a lay movable toward thedetector and a surface to be detected, a movable support,

a swinging detector, a pivoted connection.

between the detector and the support, said detector having a portion toengage the surface lying on one side of the pivoted connection, a seconddetector to penetrate the yarn secured to and moving with the support, aweight moving in a horizontal plane and operatively connected to theswinging detector, said swinging detector being limited in movement bythe second,

named detector, said weight having the greater portion of the massthereof disposed on that side of the pivoted connection opposite theaforesaid portion of the swinging detector and said weighted memberbeing normally at rest so that the latent energy stored therewith tendsto move the swinging detector around the pivotal 'connection away fromthe second named detector as the surface to be detected engages theaforesaid portion of the swinging detector during the forward movementof the lay. Y

4. In a weft detector for a loom having a lay movable toward thedetector and a surface to be detected, a movable support, a swingingdetector, a pivoted connection between the detector and the support,said detector having a portion to engage the surface lying on one sideof the pivoted to be detected engages the aforesaid portion to move thesupport normally during the advance movement of the'lay against theaction of said yielding means.

5. In a weft detector for a loom having a lay movable toward thedetector and a surface to be detected, a movable support, a swingingdetector, a pivoted connection between the detector and the support,said detector having a portion to engage the surface lying on one sideof the pivoted connection, a second detector fixed to the support, aweighted member operatively connected to the swingin detector andmovable in a horizontal p ane and having the center of gravity thereoflocated on that side of the pivotal connection opposite the aforesaidportion of the swinging detector, said swinging detector normally beinglimited in movement by the second named detector, yielding means to holdthe support in rearward position with the weighted member against thestop, said weighted member, because of the latent energy stored therein,tending to move the swinging detector away from the second detector whenthe surface being detected enga es said member and moves the supportorwardly against the yielding means during the forward movement ofthelay.

In testimony whereof I have hereunto affixed my signature.

WALTER H. WAKEFIELD.

